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Simplifying x2 + -6x + 80 = 0 Reorder the terms: 80 + -6x + x2 = 0 Solving 80 + -6x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-80' to each side of the equation. 80 + -6x + -80 + x2 = 0 + -80 Reorder the terms: 80 + -80 + -6x + x2 = 0 + -80 Combine like terms: 80 + -80 = 0 0 + -6x + x2 = 0 + -80 -6x + x2 = 0 + -80 Combine like terms: 0 + -80 = -80 -6x + x2 = -80 The x term is -6x. Take half its coefficient (-3). Square it (9) and add it to both sides. Add '9' to each side of the equation. -6x + 9 + x2 = -80 + 9 Reorder the terms: 9 + -6x + x2 = -80 + 9 Combine like terms: -80 + 9 = -71 9 + -6x + x2 = -71 Factor a perfect square on the left side: (x + -3)(x + -3) = -71 Can't calculate square root of the right side. The solution to this equation could not be determined.
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